Cat Genetics Flashcards
1
Q
Qualitative traits
A
- Mendelian, single gene
- few genes
- discreet variables
2
Q
Quantitative
A
- controlled by many genes
- continuos variables
3
Q
Colors
A
- Presence/absence of 2 pigments: Pheomelanin, eumelanin
- Everything else is modification of those
4
Q
Pheomelanin
A
red, yellow orange
5
Q
Eumelanin
A
- black
6
Q
Cause of darker “points”
A
Temperature dependence
7
Q
Sample 2:
- The orange / non-orange gene is sex-linked -> co-dom. The O allele
gives orange color; o allele gives
non-orange. - If an orange queen mates with a non-orange
tom, will there be any all-orange kittens? If
so, can we determine the sex of these kittens
by their color?
A
Yes, all kittens will be orange.
No, we cannot determine the sex of kittens by their color since both male and female kittens will have orange fur .
8
Q
Temperature dependence
A
- insulators cause fur to be whiter
9
Q
Sex-linked: can we determine the sex of the cat via its colors?
A
- yes
10
Q
crossing two white cats should only produce white kittens
A
- false
11
Q
How can we produce tailless kittens without producing homozygotes (which would die during development)?
A
- Have one parent manx and the other non-manx (with a tail)
12
Q
Mutations
A
- happen spontaneously
- often, but most die out
- not initiated by humans (usually)
- Often considered a negative thing
- allows for evolution
13
Q
Inbreeding (disease)
A
- breeding of closely related individuals
- increase homozygosity
- YAY: necessary to solidify breed traits
- NAY: can increase incidence of phenotypes of deleterious recessive genes
14
Q
Genetic bases can be seen when ____ are known – so maybe just more ____
A
when PEDIGREES are known, so maybe just more NOTICEABLE
15
Q
Hypoallergenic Cat
A
- Allerca Lifestyle Pets company
- most allergies are to a glycoprotein produced by cat (saliva, sebaceous glands)
- discovered mutations in some cats
- Selectively bred these cats (with DNA confirmation)
